Sentry’s UTB system (Unitized Thru-Bore) is designed for ongoing field development at higher pressures. The Sentry UTB system utilizes mandrel hangers and pack-offs and can be run independently or together in a single trip, if needed. These hangers and pack-offs can be quickly tested after landing. Additionally, the UTB system incorporates standard off the shelf contingency casing hangers in the event that casing becomes stuck prior to reaching TD.
The UTB is a through bore system, which allows the drilling rig to drill continuously, without removing the BOP until the drilling portion of the well is completed
Mandrel hangers reduce the time required for landing casing and cementing
Mandrel hanger pack-offs isolate the annuluses and allow for quick hydraulic testing of the annular seals after installation
Integrates the use of standard tubing heads, tubing hangers and tubing head adapters
Uses standardized running tools, bowl protectors and test plugs